She pulled my shirt off. The scars. She'd seen them more than Suki had. Every Friday scan, every Wednesday addition, the months of healing sessions that had made her hands the most familiar touch on my body. She'd mapped every line with Resonance. She knew the depth and the age and the nerve density of each scar at a resolution that exceeded visual assessment. She'd felt them from the inside.

  Now she was seeing them from the outside with eyes that were not clinical. Her gaze moved down my chest with the focused attention she applied to channel maps: systematic, thorough, nothing missed. But the attention carried a heat that channel mapping didn't produce. Her eyes on my scars were not cataloguing damage. They were cataloguing the body she wanted to touch.

  She traced the longest scar with her finger. Collarbone to sternum. The same line that Suki had kissed and claimed. Petra's finger followed the line with the precision of a woman who'd felt the scar's interior architecture through Resonance and who knew, at a molecular level, where the tissue was most sensitive and where the nerve density was highest and where the touch would produce the most response.

  She was right. The touch produced response. The nerve-dense points along the scar fired under her fingertip and the firing traveled through my channels and the channels carried the sensation with the same completeness they carried Flux.

  "I know where you feel the most," she said. "I've mapped it. Every nerve junction. Every sensitivity peak." Her finger moved to the second scar, the one below the sternum. Found a point. Pressed. The sensation was sharp, bright, specific, a nerve junction that her Resonance had identified and that her finger was now activating with the targeted precision of a healer who knew the body she was touching better than any other person alive. "Here." She moved to the third scar. Another point. Another sharp, bright response. "And here." A fourth point, on my left side, the ragged scar from prototype twelve. "And here."

  She was playing me. The way a musician plays an instrument she's studied: knowing the tuning, the resonance points, the places where pressure produces tone. She was using her medical knowledge of my body to touch me in ways that were designed to produce maximum sensation and the design was working. Each point she activated sent a pulse through my channels and the pulses were building into a pattern that the Core processed as arousal with a clinical precision that was, itself, arousing.

  I reached for her top. She let me pull it over her head. The fabric cleared her face, her hair, her raised arms, and her body was bare from the waist up.

  Her breasts were small and perfect. The word "perfect" was not analytical. It was the word that arrived when the analytical framework failed and the visual input exceeded the vocabulary. They were proportioned to her frame: modest, firm, sitting high on her chest, the skin pale with a scatter of freckles across the upper curves that continued the constellation from her shoulders. Her nipples were pink, lighter than Suki's dark ones, small and stiff in the room's air, the areolae tight and delicate. The shape of each breast was a precise curve, geometry that my Flux-enhanced senses tracked with a resolution that captured the way they moved when she breathed — a small rise and fall, subtle, the movement of a body that was compact and light.

  I looked at her. She let me look. The looking was different from looking at Suki: Suki's body commanded attention through abundance, through fullness and curve and the athletic power that filled a room. Petra's body invited attention through precision, through the elegance of small proportions and the beauty of exact lines. The narrow waist, impossibly narrow, the skin smooth across her flat stomach. The slight flare of her hips above the leggings' waistband. The collarbones, sharp and delicate. The freckles everywhere, scattered like a map of something only her body knew.

  "You're staring," she said.

  "I'm always staring. You told me that the first time you saw me look at Suki."

  "I remember." The ghost of a smile. "I wondered if you'd look at me the same way."

  "I'm looking at you a different way. The same amount. Different frequency."

  The smile bloomed. The full one, the one that broke across her face and brightened the green eyes and shifted the freckles and cracked the composure open to show what was behind it. "Different frequency. That's the most Renn Vasik compliment possible."

  She stepped to me. Her bare chest met my scarred chest. The contact was different from Suki's full-body press. Petra was smaller, her breasts pressing against my lower chest rather than my upper, her head at the level of my collarbone. The height difference meant she was looking up and the looking-up exposed her throat and the freckles on her throat and the pulse in the hollow above her collarbone. The Resonance bridge activated at every contact point and the frequency that flowed between us was the healing register, warm and low, the frequency I'd associated with safety since the first cracked ribs.

  But the healing register was carrying something that healing sessions didn't carry. The warmth was the same. The frequency was the same. The content was different. The healing register's warmth was, tonight, the warmth of a woman's bare skin against mine, and the safety was, tonight, the safety of a person who knew every scar on my body and was pressing her chest against them with the deliberate intention of replacing the clinical history of that contact with something personal.

  My hands went to her waist. The narrowness. My fingers found the notches of her ribs through the skin, each one countable, the architecture of a small body that was light enough to lift and strong enough to have held a scanner modification and a confrontation and a secret. I traced down from her ribs to the waistband of her leggings. The skin between her ribs and her hips was smooth and warm and the muscle beneath was taut and the combination was the same soft-and-firm that I'd discovered on Suki but at a different scale. Everything about Petra was smaller and the smallness concentrated the sensation rather than spreading it.

  She reached between us and touched my chest. Not the scars this time. The flat plane between the scars, the uncut skin, the tissue that the prototypes hadn't reached. Her fingers spread across my chest and her Resonance activated through the contact: the healing frequency, intentional now, pouring through her palms into my channels. But the healing wasn't healing. The frequency was the same but the intent behind it was different and the intent changed what the Flux did when it entered my channels. Instead of seeking damage and repairing it, the healing frequency sought sensitivity and amplified it.

  She was using her healing Resonance to heighten my nerve response. Every point her frequency touched became more sensitive. The skin under her palms lit up with a receptivity that made the air feel thick and her touch feel like fire and the fire was warm and the warm was her and the technique was something she'd developed, not from the medical curriculum but from the knowledge of my channels that months of scanning had given her.

  "That's not a standard technique," I said. The words came out thick.

  "I developed it for you." Her hands moved on my chest, the Resonance spreading the heightened sensitivity outward from her palms in a wave that followed my channel pathways. "Your channels are the most responsive I've ever worked with. The synthetic architecture accepts any frequency I give it. Standard biological channels filter incoming Resonance through their pre-shaping. Yours don't filter. They amplify. I can give you more sensation through Resonance than any biological cultivator could receive."

  She was right. The sensation was beyond what physical touch alone could produce. Her hands on my chest were simultaneously her palms on my skin and her Flux in my channels and the two inputs were layered, each one amplifying the other, the physical contact setting the baseline and the Resonance multiplying it.

  I kissed her. Hard. Harder than our previous kisses, harder than the careful attention she'd taught me to associate with her mouth. She responded. Her hands gripped my shoulders and her mouth opened and the kiss was not careful and the not-careful was what she'd asked for. The healing frequency surged through the contact and the surge heightened every sensation: her lips against mine, her tongue against mine, the sound she made: a soft, sharp inhale that she breathed into my mouth and that I tasted alongside the vanilla.

  I lifted her. My hands under her thighs, the Flux-enhanced strength making her weight negligible. She gasped. Her legs wrapped around my waist, the leggings warm against my sides, her arms around my neck. The position brought her face level with mine and her breasts level with my chest and the full-length contact was compressed into the space between her body and mine, everything pressed and warm and the Resonance running through every contact point.

  I carried her to the bed. Set her down. She sat on the edge, looking up at me, her legs parted around my standing hips, her hands on my stomach. Her green eyes were dark with dilation and the freckles were flushed with blood and her breathing was quick and the healing frequency was still active, flowing from her palms into my abdominal channels, the heightened sensitivity making her touch on my stomach feel like her touch was everywhere.

  "Lie back," I said.

  She lay back on the bed. Her auburn hair spread across the pillow, a different color than Suki's black, a different texture, the waves creating patterns that caught the overhead light. Her chest rose and fell, her small breasts lifting with each breath, the pink nipples tight. Her stomach was flat, the narrow waist visible from above, the leggings starting at her hips.

  I leaned over her. Kissed her mouth. Her jaw. The hinge of her jaw where the skin was thin and the pulse was close and she tilted her head and the tilting was the same guidance that Suki used — the body's language communicating where to kiss. I kissed down her throat. Her collarbone, the sharp line of it. The freckles that scattered across her chest, each one a point of warmth under my lips. The upper curve of her left breast. The slope of it, the skin smooth and warm, the breast small enough that my mouth traveled from the top to the nipple in a single continuous motion.

  I took her nipple into my mouth. The texture was different from Suki's — smaller, more delicate, the areola tighter. Petra's response was different too: where Suki had gasped, Petra moaned, low and sustained, the sound coming from deep in her chest and carrying through the Resonance bridge into my channels. The healing frequency spiked when I sucked, the amplification technique activating involuntarily, and the spike heightened my own sensitivity to the point where the feeling of her nipple against my tongue was a full-body event.

  "Oh," she breathed. Her hand found the back of my head. Her fingers in my hair, gripping, the strength surprising again. "That — the amplification is feedback looping. I'm amplifying your sensitivity and your response is amplifying mine through the bridge and the loop is—"

  "Stop analyzing."

  She laughed. The laugh vibrated through her chest against my mouth and the vibration was warm and real and the sound was the most unguarded thing I'd heard from Petra Calloway since the fourth smile.

  I kissed her other breast. The same attention, the same slow traversal from upper curve to nipple, the mouth learning her shape as it had learned Suki's. Different data. Different dimensions. Petra's breasts were a study in precision, each one fitting my mouth as if designed for the scale, the nipple centered and responsive, the skin producing a flush that spread across both mounds as the arousal built.

  I kissed down her stomach. Flat, warm, the muscles tensing under my lips. Her navel. The skin below, where the leggings began. I hooked my fingers in the waistband and she lifted her hips and the leggings came down and she was in her underwear.

  Simple. Dark. What it covered was the last territory that my senses hadn't mapped through fabric. Her hips were narrow compared to Suki's but the proportion to her waist was the same elegant ratio — everything on Petra was scaled and balanced. Her thighs were slim, the muscle defined without bulk, the skin smooth and pale with a scatter of freckles on the inner surfaces that continued the constellation that covered the rest of her.

  I pulled the underwear down. She lifted again. The fabric cleared her hips, her thighs, her feet. She was naked on my bed.

  Petra Calloway, five foot two, 18, the healer who'd read my scars through Resonance and who'd tampered with a Guild scanner to keep me hidden and whose hands shook after the procedure and whose steel didn't. Naked. Her auburn hair on my pillow. Her green eyes looking up at me. Her body bare: the freckles, the small breasts with their pink nipples, the narrow waist, the precise proportions, the auburn hair between her thighs, darker than the hair on her head, the soft mound visible beneath.

  She was beautiful. Not Suki's beauty of abundance and power. Petra's beauty of exactness and care. The beauty of a thing that is made well and is proportioned correctly and that has no excess and no deficit. Every element of her body was where it should be and the size it should be and the sum was greater than the components.

  I knelt between her legs. She watched me. Her breathing was fast and the Resonance was active and the amplification technique was running through the bridge and every touch I gave her was being doubled by the feedback loop she'd described.

  I kissed her inner thigh. The freckles there were faint, almost invisible, and the skin was softer than anywhere else on her body. She trembled. The tremble was small and concentrated, the physical expression of heightened sensitivity in a body that was already running at amplified response. I kissed the other thigh. The same tremble. My mouth moved higher.

  I kissed her between her legs. The first contact of my mouth against her pussy and the sensation that traveled through the bridge was staggering — her amplification technique feeding her response back into my channels at multiplied intensity. She was wet, the taste warm and clean and distinct from Suki's taste the way everything about her was distinct. Her body's arousal was a different chemical composition, a different frequency, and my channels catalogued the difference with the same resolution they applied to everything: completely, involuntarily.

  She cried out. Not the controlled sounds of the scanning sessions or the careful composure of the medical bay. A sound that was unmediated, the vocalization of a woman whose body was receiving stimulation at twice the normal intensity because the healer who'd amplified her patient's sensitivity had forgotten that the amplification was bidirectional and the feedback loop was doubling everything.

  I found her clit with my tongue. The anatomy was smaller than Suki's, the hood covering more of the shaft, and my tongue drew it out with pressure that the bridge's feedback told me was exactly right. Petra's hips came off the bed. Her hands gripped the sheet. The healing frequency was running wild now, uncontrolled, the amplification technique no longer deliberate but automatic, her Resonance pouring through the bridge at a rate that turned every stroke of my tongue into a full-spectrum event in both our channel systems.

  I worked her with my mouth. The bridge's feedback was an instruction manual that exceeded anything verbal communication could provide. I could feel what worked: the pressure, the angle, the rhythm. I could feel the wave building in her body through the shared channel, the mounting intensity, the approach of the crest. I could feel the crest approaching the way I felt Integration milestones approaching: inevitably, with a sense of systems converging toward a threshold.

  She came with both hands in my hair and her back arching off the mattress and a sound that was sustained and high and broke into a series of shorter sounds as the orgasm pulsed. The Resonance feedback carried the orgasm through the bridge into my channels and I felt it: the wave cresting and breaking and the pleasure translating through the healing frequency into a sensation that was hers and mine and layered and the layering made it more than either person's experience alone.

  The amplification technique collapsed. Her Resonance stuttered, the deliberate frequency losing coherence as the orgasm disrupted her concentration, and the disruption was the most human thing I'd felt from Petra's Flux: the healer losing control of her technique because the pleasure had exceeded the technique's containment.

  She lay on the bed. Breathing hard. Her chest rising and falling, the small breasts lifting and settling. The flush was vivid across her face and chest and stomach, the freckles dark against the pink. Her green eyes were half-closed, the lashes trembling, the composure entirely absent.

  "The feedback loop," she said. Breathless. "I didn't account for the feedback loop. The amplification is bidirectional and I—" She stopped. Swallowed. "I came harder than I've ever come in my life and it's because I accidentally designed a Resonance technique that doubles orgasm intensity through paired channels and I'm going to have to document this."

  "Please don't document this."

  She laughed. The real laugh, the full one, the sound that was warm and unguarded and that shook her body and made her breasts tremble and that I watched with the same resolution I watched everything about her and the watching was proprietary and gentle simultaneously.

  I lay beside her. She turned into me. Her body against mine, small and warm, fitting against my side with a geometry that was different from Suki's geometry. Suki filled the space beside me. Petra nestled into it. Both positions were correct. Both women's bodies belonged in the spaces they occupied.

  Her hand found the longest scar. The same scar. Both women gravitated to it, the line from collarbone to sternum, the oldest mark, the first installation. Petra's fingers on the scar were clinician and lover simultaneously, the touch reading the tissue out of habit while caressing it out of desire, and the duality was Petra in her purest form.

  "I'm not going to pretend this doesn't change things," she said. Into my chest. Her voice returning to its normal register, the composure reassembling, but lighter now. The composure after a scanner modification was brittle. The composure after an orgasm was warm. "I know about Suki. I know you're with her. I told you I wasn't asking you to choose and I'm still not asking. But this—" Her hand pressed against the scar. "This is mine now too."

  "It was already yours. You felt it before anyone else did."

  "I felt it through Resonance. This is different."